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Jul 19 1 2 1636545 y A.M.BATES METHOD OF MAKING BAGS Filed Aug. 20, 1923 a Sheets-Sheet 1 gwmmkn V Rdelmer mm.

\ 1,636,545 A. M. BATES METHOD OF MAKING BAGS Fild Aug. 20, 1923 s Sheets-Sheet 2 July 19, 1927.

Adelmer M Bares.

, a @M/ ycnw vzz Gunman Patented July 19 1927.

uuirsn STATES PATENT OFFICE.

ADELMER M. BATES, OF CHICAGO, ILLINOIS, ASSIGNOR TO BATES VALVE BAG COM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF WEST VIRGINIA.

METHOD or MAKING BAGS.

Application filed August 20, 1923. Serial No. 658,240.

My invention relates to a method of making bags, and the objects and particular features of the invention will appear as the description of the method proceeds.

Some of the features of the invention are disclosed in my prior applications for process of making bags, Serial Nos. 285,692, 285,693 and 285,694 filed March 27, 1919, and as to such features, this application is a continuation of my said prior applications.

In the accompanying drawings, which diagrammatically illustrate my invention, Fig. l is a side view of the'apparatus for forming a tube from a strip of fabric. Figs. 2, 3, 4 and 5 are sections on lines 2-2, 33, 4-4 and 55 respectively, of Fig. 1. Fig. 6 is similar to Fig. 5, showing an alternative form of tube. Fig. 7 illustrates the severance of the tube into two-bag lengths. Fig. 8 illustrates the formation of bags from the two-bag lengths. Fig. 9 illustrates a detail of the step shown in Fig. 8. Fig. 10 is similar to Fig. 8 showing an alternative form of reinforcement. Fig. 11 illustrates a cloth strip. Figs. 12, 18, 14; and 15 illustrate steps in the formation of the strip shown in Fig. 11 into bags.

In the preferred form of my invention, a paper strip, 20, is lead from a roll, 21, past a pasting device, 22, which pastes one edge, 23. The strip is then folded and the edges progressively brought together, as illustrated by Figs. 2, 3 and l, and finally wound into a package, 24.

As will appear from Fig. 5, the tube, 25, will be thickest where the edges, 23, are lapped and pasted together. The result is that when layers of the tube are superposed, as is done in winding the tube, the pasted edges are pressed and held together. I prefer to leave the tube packed in this manner until the paste has somewhat dried. The same result, of pressing together the pasted edges of the tube, may be obtained with other forms of tube, as illustrated in Fig. 6, for example.

I prefer to use a strip having designs 26 printed thereon, the designs for successive bag lengths being upside down relative to each other. I also prefer to have the strip bear indicating marks 27, 27*, between adj acent desigps bottom. It is desirable to use the indicating marks, even. Where no designs are used.

I sever the tube, as illustrated in Fig. 7, between the design tops, or along each indicating mark 27, thus forming a plurality of tube lengths, each of proper length to form two bags.

The tube lengths are arranged side by side, and parallel seams 28, 29 are sewed across them. The indicating marks, 27, are very useful in arranging the lengths and sewing the seams at the proper places. I prefer to reinforce these seams by strips 30, 65 31, fed into the seam on opposite sides.- Continuous strips are used, and may be fed from coils, as shown at 32, 33, i 9.

The tube lengths are severed between the seams, as at 34, and the reinforcing strips and threads are severed between the bags, as at 35, 86, thus completing two separate bags for each tube length.

Instead of parallel reinforcing strips, a single broad strip, 37, may be used, as shown 7 5 in Fig. 10, and two seams sewed through the strip, which is afterwards severed with the bag material therebetween as shown at 38.

A. variation of the process, in which a a) cloth strip is used, is illustrated in Figs. 11 to '15, inclusive. A strip 410, is shown wide enough to form two tubes. The sides, 4-1, 4 2, are folded in to the central line, 43, and parallel seams, as, 45, are sewed along the folded edges. The two tubes thus formed are severed, as shown in Fig. 12, and then reversed, as shown in Fig. 13. Such a tube may be formed into separate bags, as shown in Fig. 14-, preferably by severing into twobag lengths, arranging the lengths side by side, sewing parallel seams, 46, 4:7, across the successive lengths, and severing between the seams, as at as.

shown, I use the designs 26, and indicating marks 27, corresponding to the designs 26 and marks 27 on the paper tube.

The serving of parallel seams across twobag lengths of tubing is very advantageous, as two-bag ends can be sewed quickly as could one, were the tube severed into onebag lengths before the cross seams were sewed; and, moreover, sewing parallel seams and severing midway between them results in uniform projection of the tube walls beyond the seams. This uniform projection of tube walls makes a sul'liciently strong seam with the minimum use oi? fabric, and gives the bag end a neat appearance.

Storing the tube with the pasted edges held togl ether until the paste somewhat dried avoids opening the pasted seamduring subseiignent manipulation of the tube.

it is obvious that some of the advantages o t this invention could be realized it the pairs of closures were formed across the tube bettore severzmce into two-bag lengths. or it len ths oi any even number of bags "termed and the necessary pairs of closures 'tormez'l simultaneously or successsivelv.

alibi I s I 'ii t a ur coo )erate hill 0 various speci c c h es 1 form a desirable method of making paper bags, the several features may be modified used in other relations within the scope i: :he appended claims, without departing 1romrthe spirit of the invention.

What I claim is:

1. The process of making bags from a tube, which consists in severing the tube into -.lengths, each of proper length to make two bags, sewing parallel transverse seams mid way of each length, and severing each length between the seams '2. The process of making bags from a tube, which consists in severing the tube into lengths-each of proper length to make two bags, forming adjacent closures across each length, and severing the lengths between the closures to form two bags from each length.

3. The process of making bags from a tube long enough to make two bags, which consists in making two adjacent closures across the tube and severing the tube'between the closures thereby forming two bags, each with a closed bottom and open mouth.

4. The process of making bags, which con sists-in forming atube long enough to make two bags and with an indicating mark propcrly positioned thereon, and, at the place indicated by the mark, forming two adjacent closures across the tube "and severing the tube between the closures to term a closed end for each of two bags.

5. The process of making bags which consists in forming a tube with a series of indicating marks thereon at intervals oi? two bag lengths longitudinally of the tube, severing the tube midway between the marks, and, at places indicated by the'marks, tormin two parallel closures across each severed of length and severing the lengths between the closures.

6. The process of making bags which consists in forming a tube with a series of designs, with the designs on successive bag lengths relativelyupside down and with indicating marks between each pair of adlengths adjacent lops ot fill-l6 de;

sists in forming a tube with a series of del signs, with the de gns on she si've bag relatively upside down, dividing the tube into lengths, each long enough to form two bags, by severing the tube between the gns, forming two closures across each length between the bottoms of the designs, and severing-the lengths between the closures.

8. The process of making bags which con sists in forming a tube with a series of de signs thereon, with the designs on successive bag lengths relatively upside down, and forming two adjacent closures between each pair of adjacent design bottoms, [1,I1Cltl161- by :torming closures for the bottoms cof all the bags.

9. The process of making bags which consists in ttorming a tube with a series of .designs, with the designs on successive bag lengths relatively upside .down, severing the tube between adjacent design tops, sewing parallel transverse seams between each pair of adjacent design bottoms, and severing the tube between the seams.

10. The process of making bags from a tube, which consists in severing. the tube into lengths, each long-enough to make two bags, sewing parallel transverse seams -midway 01 each length, and severing each length between the seams.

'11. The process of making bags from a tube, which consists in severing the tube into lengths, each long enough to make two bags, sewing continuous parallel seams mi d-way across each of a series of lengths in sucees sion, severing each length between .the seams progressively as the seams are formed, and severing the thread between the bags, ,and thereby completing two separate bags rom each. length. i

12. The process of making bags from a tube, which consists in severing the tube into lengths, each long enough to make two bags, sewing continuous parallel reinforced seams midway across each of a series of lengths in succession, severing each length between .the seams, and severing the thread and reinforcing material between the bags.

The process of making bags from a tube, which consists in severingthe tube into lengths, each long ei'iough to make two he s sewing a pair of continuous reinior n strips across each side of a series of lengths by two seams each of which passes through an opposed pair of strips and the tube walls therebetween, severing each length between the seams, and severing the strips adjacent each bag att r they are sewed thereto.

14. The process of making bags, which consists in pasting together the edges of a paper strip to form a tube, forming the tube into a package with the pasted. edges i pressed together, leaving the tube in such package until the paste is dry thereafter severing the tube into lengths each long enough to make two bags, sewing parallel.

reinforced seams midway across each length,

and severing each length between the seams. 10

In testimony whereof I have hereunto signed my name to this specification.

ADELMER M. BATES. 

